A fiber cement board pressing mechanism and pressing method

Abstract

The present invention discloses a fiber cement board pressing plate mechanism and a pressing plate method, and relates to the technical field of fiber cement board production. An upper pressing block is movably arranged on the top of a horizontally arranged lower seat plate, and the plate surfaces of the upper pressing block and the lower seat plate on the opposite side are parallel to each other, a plurality of through holes along the thickness direction of the upper pressing block are opened on the bottom plate surface of the upper pressing block, a connecting plate that moves up and down relative to the upper pressing block is arranged on the top of the upper pressing block, a plurality of pressing rods for inserting into the through holes are fixed on the bottom plate surface of the connecting plate, and when the connecting plate is at the lower limit position, the bottom end of the pressing rod is higher than the bottom surface of the upper pressing block, the rod diameter of the pressing rod is smaller than the hole diameter of the through hole, and a water suction pipe is arranged around the position of each pressing rod at the bottom of the connecting plate, and the water suction pipe is located in the gap between the through hole and the pressing rod; the squeezed water can quickly leave the fiber cement board, thereby ensuring the dehydration effect of the fiber cement board.

Description

Technical Field

[0001] The invention relates to the technical field of fiber cement board production, in particular to a fiber cement board pressing plate mechanism and a pressing plate method. Background Art

[0002] Fiber cement board is a new type of building material, mainly composed of cement, mineral filler and fiber (such as wood fiber or other non-asbestos fiber). It is widely used in the modern construction industry. Fiber cement board is generally formed by molds and needs to be dehydrated after forming to remove excess water after forming. Common dehydration methods include pressurizing the limit plate. The dehydrated fiber cement board can improve its own density and strength and reduce the time and cost of subsequent maintenance.

[0003] The name "Hydraulic press for pressing single-piece fiber cement board" (document number CN204640849U) discloses a scheme for pressurizing and dehydrating fiber cement boards, which directly delivers slabs or pressed dehydrated slabs to the pressing or stacking process through a multi-station conveying device extending to both ends of the hydraulic press; the slabs are conveyed by a fiber woven conveyor belt to quickly drain water vertically during the pressing process; however, when pressing the fiber cement board, the squeezed water is difficult to quickly leave the pressing area, and the water on the top of the fiber cement board can easily seep back into the fiber cement board.

[0004] In addition, in the prior art, a single-piece pressing process is used to dehydrate fiber cement, specifically, the slab is placed on a template with many small holes for pressing to drain water vertically. However, since there will be small protrusions on the surface of the slab after it is formed in the mold, these protrusions will block the small holes on the template during the pressing process, resulting in the problem that water cannot be discharged in time. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the present invention proposes a fiber cement board pressing plate mechanism and pressing plate method, so that when the fiber cement board is pressed and dehydrated, the squeezed water can quickly leave the fiber cement board, thereby ensuring the dehydration effect of the fiber cement board.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a fiber cement board pressing plate mechanism, an upper pressing block is movably arranged on the top of a horizontally arranged lower seat plate, and the plate surfaces of the upper pressing block and the lower seat plate on the opposite side are parallel to each other, a plurality of through holes along the thickness direction of the upper pressing block are opened on the bottom plate surface of the upper pressing block, a connecting plate that moves up and down relative to the upper pressing block is arranged on the top of the upper pressing block, a plurality of pressing rods for inserting into the through holes are fixed on the bottom plate surface of the connecting plate, and when the connecting plate is in the lower limit position, the bottom end of the pressing rod is higher than the bottom surface of the upper pressing block, the rod diameter of the pressing rod is smaller than the hole diameter of the through hole, and the bottom of the connecting plate is at each pressing rod A water suction pipe is arranged around the position, and the water suction pipe is located in the gap between the through hole and the pressure rod; the driving mechanism drives the upper pressure block to move downward to squeeze the fiber cement board on the top of the lower seat plate by driving the connecting plate; a groove is provided on the top plate surface of the upper pressure block, and the top hole of the through hole is located at the bottom of the groove, and the connecting plate is arranged in the groove and moves up and down along the groove depth direction of the groove; guide columns are vertically arranged around the top of the lower seat plate, and the top end of the guide column passes through the wall of the upper pressure block, and the guide column and the upper pressure block form a sliding fit along the length direction of the guide column, and a second spring is sleeved on the outer periphery of the guide column between the upper pressure block and the lower seat plate.

[0007] As a further improvement of the present invention: ear plates are fixed on the left and right sides of the connecting plate, a guide rod is fixedly connected to the bottom of the ear plate, a guide hole for inserting the guide rod is opened on the top plate surface of the upper pressure block, the guide rod and the guide hole form a sliding fit along the length direction of the guide hole, a first spring is fixed to the bottom end of the guide hole, when the connecting plate moves downward relative to the upper pressure block, the guide rod squeezes the first spring to cause the first spring to produce compression deformation.

[0008] As a further improvement of the present invention: a cavity is provided inside the connecting plate, the top end of the water suction pipe passes through the bottom wall of the connecting plate and extends into the cavity, and the top end of the water suction pipe is close to the top inner wall of the cavity, and a connecting pipe communicating with the cavity is provided on the top plate surface of the connecting plate, and the top end of the connecting pipe is connected to the air pump through an air guide pipe.

[0009] As a further improvement of the present invention: an observation window for observing the water level inside the cavity is arranged on the rear side of the connecting plate, a drain pipe is also arranged on the rear side of the connecting plate, and a valve is arranged on the drain pipe.

[0010] As a further improvement of the present invention: the top ends of the four guide columns are fixed on the bottom surface of the top plate, a push rod is penetrated and slidably arranged on the top plate, the bottom end of the push rod is connected to a push plate whose surface is parallel to the top surface of the connecting plate, and the top end of the push rod is connected to the output end of the hydraulic press.

[0011] As a further improvement of the present invention: a plurality of through holes along the thickness direction of the lower seat plate are also provided on the top of the lower seat plate, a displacement plate close to or away from the lower seat plate is provided on the bottom of the lower seat plate, a push rod for inserting into the through hole is also fixed on the top plate surface of the displacement plate, and the rod diameter of the push rod is smaller than the hole diameter of the through hole.

[0012] As a further improvement of the present invention: strip plates are arranged on the left and right sides of the displacement plate, a guide rod is fixedly connected to the top of the strip plates, a matching hole is opened at the bottom of the lower seat plate for slidingly matching with the guide rod along the length direction of the guide rod, and a hydraulic cylinder for driving the displacement plate to move is arranged below the displacement plate.

[0013] A fiber cement board pressing method, which is applicable to the above-mentioned fiber cement board pressing mechanism, comprises the following steps:

[0014] Step 1: The fiber cement board enters the area to be extruded on the top of the lower seat plate in a horizontal posture, and the hydraulic press drives the connecting plate and the upper pressing block to move downward to extrude the fiber cement board;

[0015] Step 2: The pressure rod at the bottom of the connecting plate squeezes the raised area on the top of the fiber cement board, and the water suction pipe absorbs water around the through hole into the cavity inside the connecting plate;

[0016] Step 3: The hydraulic cylinder drives the push rod to move upward to the raised area at the bottom of the extruded fiber cement board, and the water on the lower side of the fiber cement board is discharged from the lower seat plate through the through hole;

[0017] Step 4: When the water level in the cavity inside the connecting plate stops rising and the lower seat plate stops draining, the air pump stops working, the output ends of the hydraulic press and the hydraulic cylinder return to their initial positions, and the fiber cement board leaves the area between the top of the lower seat plate and the bottom of the upper pressing block.

[0018] The present invention is beneficial in that:

[0019] 1. In the present invention, in the process of using the driving mechanism to drive the connecting plate and the upper pressing block to move downward, the pressing rod at the bottom of the connecting plate can move downward relative to the through hole, thereby crushing the small protrusions of the fiber cement board located below the pressing rod, which can not only avoid the small protrusions from clogging the through hole, but also improve the surface condition of the fiber cement board. At the same time, the space between the bottom of the pressing rod and the fiber cement board, and the gap between the pressing rod and the through hole will form an area for collecting water squeezed out of the fiber cement board. The water squeezed out of the top of the fiber cement board can quickly leave the top of the fiber cement board by absorbing this part of the squeezed water through the water suction pipe, thereby reducing the phenomenon of water back seeping into the fiber cement board.

[0020] 2. In the present invention, when the upper pressing block realizes the extrusion of the fiber cement board, the air pump extracts the air inside the cavity through the air guide tube, and cooperates with the action of the water suction pipe to make the water between the pressing rod and the through hole be sucked into the cavity. In this way, on the one hand, the water can quickly leave the fiber cement board and reduce the water back-seepage into the fiber cement board. On the other hand, the entry of water into the cavity will increase the weight of the connecting plate itself, so that the overall weight of the upper pressing block increases, and then the pressure applied by the upper pressing block to the fiber cement board increases. At this time, the force applied by the hydraulic press to the upper pressing block can be appropriately reduced, thereby achieving the effect of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 , Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper pressing block in the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting plate in the present invention;

[0025] Figure 5 It is a partial cross-sectional view of the upper pressing block and the connecting plate at the through hole in the present invention;

[0026] Figure 6 It is a partial enlarged view of the bottom of the connecting plate in the present invention;

[0027] Figure 7 It is a partial cross-sectional view of the middle ear plate and the upper pressing block at the guide hole of the present invention;

[0028] Figure 8 It is a partial cross-sectional view of the lower seat plate in the present invention;

[0029] Fig. 9 The present invention is a flow chart of the method.

[0030] In the figure: 10, lower seat plate; 11, through hole; 12, displacement plate; 13, push rod; 14, strip plate; 15, guide rod; 16, matching hole; 17, hydraulic cylinder; 20, upper pressure block; 21, through hole; 22, connecting plate; 221, cavity; 222, connecting pipe; 223, observation window; 224, drain pipe; 23, pressure rod; 24, suction pipe; 25, groove; 26, ear plate; 27, guide rod; 28, guide hole; 29, first spring; 30, guide column; 31, second spring; 40, top plate; 41, push rod; 42, push plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 8 As shown, a fiber cement board pressing plate mechanism, an upper pressing block 20 is movably provided on the top of a horizontally arranged lower seat plate 10, and the upper pressing block 20 is parallel to the plate surface on the opposite side of the lower seat plate 10, and a plurality of through holes 21 along the thickness direction of the upper pressing block 20 are opened on the bottom plate surface of the upper pressing block 20, and a connecting plate 22 is provided on the top of the upper pressing block 20 for upward and downward displacement relative to the upper pressing block 20, and a plurality of pressing rods 23 for inserting into the through holes 21 are fixed on the bottom plate surface of the connecting plate 22, and when the connecting plate 22 is at the lower limit position, the bottom end of the pressing rod 23 is higher than the bottom surface of the upper pressing block 20, and the rod diameter of the pressing rod 23 is smaller than the hole diameter of the through hole 21, and a water suction pipe 24 is arranged around the position of each pressing rod 23 at the bottom of the connecting plate 22, and the water suction pipe 24 is located in the gap between the through hole 21 and the pressing rod 23; the driving mechanism drives the upper pressing block 20 to move downward to squeeze the fiber cement board on the top of the lower seat plate 10 by driving the connecting plate 22;

[0034] In the above scheme, the lower limit position of the connecting plate 22 refers to the position of the connecting plate 22 when the connecting plate 22 moves downwardly by the maximum distance relative to the upper pressing block 20; the fiber cement board is placed on the top of the lower seat plate 10, and the connecting plate 22 and the upper pressing block 20 are driven by the driving mechanism to move downward to extrude the fiber cement board to achieve dehydration of the fiber cement board. In the process of driving the connecting plate 22 and the upper pressing block 20 to move downward by the driving mechanism, the pressing rod 23 at the bottom of the connecting plate 22 can move downward relative to the through hole 21, thereby crushing the small protrusion of the fiber cement board located below the pressing rod 23, which can not only avoid the small protrusion from clogging the through hole 21, but also improve the surface condition of the fiber cement board. At the same time, the space between the bottom of the pressing rod 23 and the fiber cement board, and the gap between the pressing rod 23 and the through hole 21 will form an area for collecting water squeezed out of the fiber cement board. The water squeezed out of the top of the fiber cement board can quickly leave the top of the fiber cement board by absorbing this part of the squeezed water through the water suction pipe 24, thereby reducing the phenomenon of water back seeping into the fiber cement board.

[0035] Preferably, see Figure 3-Figure 7 As shown, a groove 25 is provided on the top plate surface of the upper pressing block 20, and the top hole of the through hole 21 is located at the bottom of the groove 25. The connecting plate 22 is arranged in the groove 25 and moves up and down along the groove depth direction of the groove 25; ear plates 26 are fixed on the left and right sides of the connecting plate 22, and a guide rod 27 is fixed to the bottom of the ear plate 26. A guide hole 28 for inserting the guide rod 27 is provided on the top plate surface of the upper pressing block 20, and the guide rod 27 and the guide hole 28 form a sliding fit along the length direction of the guide hole 28. A first spring 29 is fixed to the bottom end of the guide hole 28, and the connecting plate 22 is positioned downward relative to the upper pressing block 20. When the connecting plate 22 is displaced, the guide rod 27 squeezes the first spring 29 so that the first spring 29 is compressed and deformed; the connection between the connecting plate 22 and the upper pressing block 20 is detachable, and the two ear plates 26 are convenient for the operator to grab to realize the installation and disassembly of the connecting plate 22. When the connecting plate 22 is removed from the upper pressing block 20, the impurities inside the cavity 221 can be cleaned to facilitate the subsequent continued use; the cooperation between the guide rod 27 and the guide hole 28 is conducive to improving the stability of the up and down displacement of the connecting plate 22. At the same time, the first spring 29 is arranged at the bottom of the guide hole 28 to prevent the connecting plate 22 that has just been placed in the groove 25 from directly displacing downward to the lowest position.

[0036] See also Figure 1 , Figure 2As shown, as an embodiment of the present invention, guide columns 30 are vertically arranged around the top of the lower seat plate 10, the top of the guide column 30 passes through the wall of the upper pressure block 20, and the guide column 30 and the upper pressure block 20 form a sliding fit along the length direction of the guide column 30, and the outer periphery of the guide column 30 between the upper pressure block 20 and the lower seat plate 10 is sleeved with a second spring 31; the setting of the guide column 30 guides the moving path of the upper pressure block 20 so that the upper pressure block 20 moves downward smoothly, and the setting of the second spring 31 is used to support the upper pressure block 20, so that there is an area between the upper pressure block 20 and the lower seat plate 10 where the fiber cement board can be inserted, thereby minimizing the downward displacement distance of the upper pressure block 20 and reducing the work of the hydraulic press.

[0037] See also Figure 2 , Figure 5 , Figure 7 As shown, a cavity 221 is provided inside the connecting plate 22, the top end of the water suction pipe 24 penetrates the bottom wall of the connecting plate 22 and extends into the cavity 221, and the top end of the water suction pipe 24 is close to the top inner wall of the cavity 221, and the top plate surface of the connecting plate 22 is provided with a connecting pipe 222 communicating with the cavity 221, and the top end of the connecting pipe 222 is connected to the air pump through the air guide pipe; when the upper pressing block 20 realizes the extrusion of the fiber cement board, the air pump extracts the air inside the cavity 221 through the air guide pipe, and cooperates with the suction pipe 24 to suck the air from the cavity 221. The water pipe 24 causes the water between the pressure rod 23 and the through hole 21 to be sucked into the cavity 221. This allows the water to quickly leave the fiber cement board and reduces water seepage back into the fiber cement board. On the other hand, the entry of water into the cavity 221 will increase the weight of the connecting plate 22 itself, thereby increasing the overall weight of the upper pressure block 20 and increasing the pressure applied by the upper pressure block 20 to the fiber cement board. At this time, the force applied by the hydraulic press to the upper pressure block 20 can be appropriately reduced, thereby achieving energy saving.

[0038] See also Figure 2 As shown, in order to facilitate the understanding of the water level in the cavity 221, an observation window 223 for observing the water level inside the cavity 221 is provided on the rear side of the connecting plate 22, and a drain pipe 224 is also provided on the rear side of the connecting plate 22, and a valve is provided on the drain pipe 224.

[0039] For further information, see Figure 1 , Figure 2As shown, the top ends of the four guide pillars 30 are fixed on the bottom plate surface of the top plate 40, and a push rod 41 is penetrated and slidably arranged on the top plate 40, and the bottom end of the push rod 41 is connected to a push plate 42 whose plate surface is parallel to the top plate surface of the connecting plate 22, and the top end of the push rod 41 is connected to the output end of the hydraulic press; the setting of the push plate 42 increases the contact area between the driving mechanism and the connecting plate 22, so that the force on the top of the connecting plate 22 will be more uniform, avoiding the phenomenon that the top of the connecting plate 22 is broken due to excessive local pressure, which is beneficial to improving the service life of the connecting plate 22.

[0040] See also Figure 1 , Figure 2 , Figure 8 As shown, the top of the lower seat plate 10 is also provided with a plurality of through holes 11 along the thickness direction of the lower seat plate 10, and the bottom of the lower seat plate 10 is provided with a displacement plate 12 close to or away from the lower seat plate 10, and the top plate surface of the displacement plate 12 is also fixed with a push rod 13 for inserting into the through hole 11, and the rod diameter of the push rod 13 is smaller than the hole diameter of the through hole 11; strip plates 14 are provided on the left and right sides of the displacement plate 12, and a guide rod 15 is fixedly connected to the top of the strip plate 14, and a matching hole 16 that is slidably matched with the guide rod 15 along the rod length direction of the guide rod 15 is provided at the bottom of the lower seat plate 10, and a push rod 13 is provided at the bottom of the displacement plate 12. A hydraulic cylinder 17 is provided for driving the displacement plate 12 to move; the fiber cement board is placed in the area to be squeezed at the top of the lower seat plate 10, and the area to be squeezed is the area where the through hole 11 is located. When the fiber cement board is squeezed by the downward displacement of the upper pressing block 20, the water on the lower side of the fiber cement board will flow down from the gap between the through hole 11 and the push rod 13. Under the upward push of the hydraulic cylinder 17, the push rod 13 can crush the small protrusions on the surface of the fiber cement board in the through hole 11 to avoid the small protrusions blocking the through hole 11, thereby ensuring that the water on the lower side of the fiber cement board can leave the fiber cement board in time, thereby improving the drainage effect of the lower seat plate 10.

[0041] Embodiment 2

[0042] See also Fig. 9 As shown, a fiber cement board pressing method is applicable to the above-mentioned fiber cement board pressing mechanism, comprising the following steps:

[0043] Step 1: The fiber cement board enters the area to be extruded on the top of the lower seat plate 10 in a horizontal posture, and the hydraulic press drives the connecting plate 22 and the upper pressing block 20 to move downward to extrude the fiber cement board;

[0044] Step 2: The pressure rod 23 at the bottom of the connecting plate 22 squeezes the raised area on the top of the fiber cement board, and the water suction pipe 24 absorbs water around the through hole 21 into the cavity 221 inside the connecting plate 22;

[0045] Step 3: The hydraulic cylinder 17 drives the push rod 13 to move upward to the raised area at the bottom of the extruded fiber cement board, and the water on the lower side of the fiber cement board is discharged from the lower seat plate 10 through the through hole 11;

[0046] Step 4: When the water level in the internal cavity 221 of the connecting plate 22 stops rising and the lower seat plate 10 stops draining, the air pump stops working, the output ends of the hydraulic press and the hydraulic cylinder 17 return to the initial position, and the fiber cement board leaves the area between the top of the lower seat plate 10 and the bottom of the upper pressing block 20.

[0047] The small protrusions of the fiber cement board in the through hole 21 are crushed by the pressure rod 23, which can not only prevent the small protrusions from clogging the through hole 21, but also improve the surface condition of the fiber cement board. At the same time, the space between the bottom of the pressure rod 23 and the fiber cement board, and the gap between the pressure rod 23 and the through hole 21 will form an area for collecting water squeezed out of the fiber cement board. The water squeezed out of the top of the fiber cement board can quickly leave the top of the fiber cement board by absorbing the water through the water suction pipe 24, thereby reducing the phenomenon of water back seepage into the fiber cement board; the water between the pressure rod 23 and the through hole 21 is sucked into the cavity 221 through the water suction pipe 24, so that the water can quickly leave the fiber cement board and reduce the water back seepage. On the other hand, the entry of water into the cavity 221 will increase the weight of the connecting plate 22 itself, thereby increasing the pressure applied by the upper pressing block 20 to the fiber cement board. At this time, the force applied by the hydraulic press to the upper pressing block 20 can be appropriately reduced, thereby achieving energy saving. The fiber cement board is squeezed by the downward displacement of the upper pressing block 20, and the water on the lower side of the fiber cement board flows down from the gap between the through hole 11 and the push rod 13. Under the upward push of the hydraulic cylinder 17, the push rod 13 can crush the small protrusions on the surface of the fiber cement board in the through hole 11 to avoid the small protrusions clogging the through hole 11, thereby ensuring that the water on the lower side of the fiber cement board can leave the fiber cement board in time, thereby improving the drainage effect of the lower seat plate 10.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A fiber cement board pressing mechanism, characterized in that: An upper pressing block (20) is movably arranged on the top of the horizontally arranged lower seat plate (10), and the plate surfaces on the opposite sides of the upper pressing block (20) and the lower seat plate (10) are parallel to each other, and a plurality of through holes (21) are opened on the bottom plate surface of the upper pressing block (20) along the thickness direction of the upper pressing block (20), and a connecting plate (22) is arranged on the top of the upper pressing block (20) for vertical displacement relative to the upper pressing block (20), and a plurality of pressing rods (23) for inserting into the through holes (21) are fixed on the bottom plate surface of the connecting plate (22), and when the connecting plate (22) is located at the lower limit position, the bottom end of the pressing rod (23) is higher than the bottom surface of the upper pressing block (20), and the rod diameter of the pressing rod (23) is smaller than the hole diameter of the through hole (21), and a water suction pipe (24) is arranged around the position of each pressing rod (23) at the bottom of the connecting plate (22), and the water suction pipe (24) is located The drive mechanism drives the upper pressing block (20) to move downward to squeeze the fiber cement board on the top of the lower seat plate (10) by driving the connecting plate (22); a groove (25) is provided on the top plate surface of the upper pressing block (20), the top hole of the through hole (21) is located at the bottom of the groove (25), the connecting plate (22) is arranged in the groove (25) and moves up and down along the groove depth direction of the groove (25); guide columns (30) are vertically arranged around the top of the lower seat plate (10), the top end of the guide column (30) passes through the wall of the upper pressing block (20), and the guide column (30) and the upper pressing block (20) form a sliding fit along the length direction of the guide column (30), and a second spring (31) is sleeved on the outer periphery of the guide column (30) between the upper pressing block (20) and the lower seat plate (10).

2. A fiber cement board pressing mechanism according to claim 1, characterized in that: Ear plates (26) are fixed on the left and right sides of the connecting plate (22), and a guide rod (27) is fixed to the bottom of the ear plate (26). A guide hole (28) for inserting the guide rod (27) is opened on the top plate surface of the upper pressing block (20), and the guide rod (27) and the guide hole (28) form a sliding fit along the length direction of the guide hole (28). A first spring (29) is fixed at the bottom end of the guide hole (28). When the connecting plate (22) moves downward relative to the upper pressing block (20), the guide rod (27) squeezes the first spring (29) so that the first spring (29) is compressed and deformed.

3. A fiber cement board pressing mechanism according to claim 1 or 2, characterized in that: A cavity (221) is provided inside the connecting plate (22); the top end of the water suction pipe (24) penetrates the bottom wall of the connecting plate (22) and extends into the cavity (221); the top end of the water suction pipe (24) is close to the top inner wall of the cavity (221); a connecting pipe (222) communicating with the cavity (221) is provided on the top plate surface of the connecting plate (22); and the top end of the connecting pipe (222) is connected to the air pump via an air guide pipe.

4. A fiber cement board pressing mechanism according to claim 3, characterized in that: An observation window (223) for observing the water level inside the cavity (221) is provided on the rear side of the connection plate (22), and a drainage pipe (224) is also provided on the rear side of the connection plate (22), and a valve is provided on the drainage pipe (224).

5. A fiber cement board pressing mechanism according to claim 3, characterized in that: The top ends of the four guide pillars (30) are fixed on the bottom plate surface of the top plate (40), a push rod (41) is penetrated and slidably arranged on the top plate (40), the bottom end of the push rod (41) is connected to a push plate (42) whose plate surface is parallel to the top plate surface of the connecting plate (22), and the top end of the push rod (41) is connected to the output end of the hydraulic press.

6. A fiber cement board pressing mechanism according to claim 5, characterized in that: The top of the lower seat plate (10) is also provided with a plurality of through holes (11) along the thickness direction of the lower seat plate (10), and the bottom of the lower seat plate (10) is provided with a displacement plate (12) close to or away from the lower seat plate (10), and a top plate surface of the displacement plate (12) is also fixed with a push rod (13) for inserting into the through hole (11), and the rod diameter of the push rod (13) is smaller than the hole diameter of the through hole (11).

7. A fiber cement board pressing mechanism according to claim 6, characterized in that: Strip plates (14) are arranged on the left and right sides of the displacement plate (12), a guide rod (15) is fixedly connected to the top of the strip plate (14), a matching hole (16) is opened at the bottom of the lower seat plate (10) and is slidably matched with the guide rod (15) along the length direction of the guide rod (15), and a hydraulic cylinder (17) for driving the displacement plate (12) to move is arranged below the displacement plate (12).

8. A fiber cement board pressing method, the method being applicable to the fiber cement board pressing mechanism according to claim 7, characterized in that: The following steps are involved: Step 1: The fiber cement board enters the area to be extruded on the top of the lower base plate (10) in a horizontal posture, and the hydraulic press drives the connecting plate (22) and the upper pressing block (20) to move downward to extrude the fiber cement board; Step 2: The pressure rod (23) at the bottom of the connecting plate (22) squeezes the raised area on the top of the fiber cement board, and the water suction pipe (24) absorbs water around the through hole (21) into the cavity (221) inside the connecting plate (22); Step 3: The hydraulic cylinder (17) drives the push rod (13) to move upward to the raised area at the bottom of the extruded fiber cement board, and the water on the lower side of the fiber cement board is discharged from the lower seat plate (10) through the through hole (11); Step 4: When the water level in the internal cavity (221) of the connecting plate (22) stops rising and the lower seat plate (10) stops draining water, the air pump stops working, the output ends of the hydraulic press and the hydraulic cylinder (17) return to the initial position, and the fiber cement board leaves the area between the top of the lower seat plate (10) and the bottom of the upper pressing block (20).

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